Merge tag 'u-boot-amlogic-20210210' of https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic

- Add configuration helpers for MIPI D-PHY
- generic-phy: add configure op
- Add Amlogic AXG MIPI D-PHY driver & MIPI PCIe Analog PHY driver
- odroid: add runtime detection of the N2/N2+/C4/HC4 variants